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For Your Every Summer RSVP, with Code: SUMMER15
Description
HKS Super Fire Racing Spark Plug 50003-M40M Series Super Fire Spark Plugs HKS M Series spark plugs are high performance Iridium plugs designed to provide improved ignition performance, durability and anti carbon build up. 0. 6mm Iridium Alloy Center Electrode Outer Electrode with Platinum Chip Short Type Outer Electrode (Anti Vibration) Thermal Edge Spark Support Gap M Series is recommended for reliable ignition, durability and anti carbon buildup under high load. The Iridium alloy is used
M-Series Super Fire Spark Plugs
HKS M-Series spark plugs are high performance Iridium plugs designed to provide improved ignition performance, durability and anti-carbon build-up.
- 0.6mm Iridium Alloy Center Electrode
- Outer Electrode with Platinum Chip
- Short Type Outer Electrode (Anti-Vibration)
- Thermal Edge
- Spark Support Gap
M Series is recommended for reliable ignition, durability and anti-carbon buildup under high load.
The Iridium alloy is used because of its durability and reliability. On an average plug, a narrow core typically shortens life span of plug but with the intense durability of iridium there is no sacrifice in any longevity. With a high melting point of 2454 degrees C, opposed to the 1769 degrees C of white gold, the electrode can tolerate the high levels of compression and minor knocking without any deterioration. A nickel coating on the housing also prevents the spark plug from premature deterioration. The Iridium plugs are available for multiple applications and offered in "colder" heat ranges of 7 and up and specifically for rotary, heat ranges of 9 and up are offered.
Heat Range: NGK # 8
Thread Size: 14mm × 19mm
Wrench Size: 16mm
Fits:
| ACURA | INTEGRA | ALL | 1.8 | B18A1 | 1991 - 1993 | DB1 Chassis | DOHC | Stock Plug/Heat Range: JIS:6 | From 10/1991 Thru 4/1993 Production Date |
| ACURA | LEGEND | V6 | 2.5 | C25A1 | 1985 - 1987 | KA2 Chassis | Stock Plug/Heat Range: JIS:6 | From 10/1985 Thru 2/1987 Production Date | |
| ACURA | LEGEND | V6 | 2.7 | C27A1 | 1987 - 1990 | KA3/KA6 Chassis | Stock Plug/Heat Range: JIS:6 | From 2/1987 Thru 9/1990 Production Date | |
| HONDA | CIVIC | L4 | 1.5 | D15B2 | 1987 - 1989 | EF2/EF4 Chassis | Stock Plug/Heat Range: JIS:6 | From 9/1987 Thru 9/1989 Production Date | |
| HONDA | CIVIC | L4 | 1.5 | D15B2 | 1989 - 1991 | EF2/EF4 Chassis | Stock Plug/Heat Range: JIS:6 | From 10/1989 Thru 8/1991 Production Date | |
| HONDA | CIVIC | L4 | 1.5 | D15B7 | 1992 - 1996 | EY4 Chassis | Stock Plug/Heat Range: JIS:6 | From 10/1992 Thru 2/1996 Production Date | |
| HONDA | CRX | L4 | 1.5 | D15B2 | 1987 - 1989 | EF6 Chassis | Stock Plug/Heat Range: JIS:6 | From 9/1987 Thru 9/1989 Production Date | |
| HONDA | CRX | L4 | 1.5 | D15B2 | 1989 - 1991 | EF6 Chassis | Stock Plug/Heat Range: JIS:6 | From 9/1989 Thru 2/1992 Production Date | |
| HONDA | PRELUDE | L4 | 2.0 | B20A5 | 1985 - 1991 | BA1/BA4/BA5 Chassis | DOHC | Stock Plug/Heat Range: JIS:6 | From 10/1985 Thru 9/1991 Production Date |
| HONDA | PRELUDE | L4 | 2.0 | B20A5 | 1987 - 1991 | BA4/BA5 Chassis | Stock Plug/Heat Range: JIS:5 | From 4/1987 Thru 9/1991 Production Date | |
| HONDA | PRELUDE | L4 | 2.0 | B20A5 | 1989 - 1991 | BA5 Chassis | DOHC TCS | Stock Plug/Heat Range: JIS:6 | From 11/1989 Thru 9/1991 Production Date |
| LEXUS | ES300 | ALL | 3.0 | 3VZFE | 1992 - 1996 | VCV10 Chassis | Stock Plug/Heat Range: JIS:6 | From 10/1991 Thru 8/1996 Production Date | |
| MAZDA | 626 | L4 | 2.0 | ALL | 1987 - 1989 | GDER/GDEA/GDEP/GDEB/GDES Chassis | DOHC | Stock Plug/Heat Range: JIS:6 | From 5/1987 Thru 5/1989 Production Date |
| NISSAN | 180SX | ALL | 1.8 | CA18DET | 1989 - 1991 | RS13/KRS13 Chassis | Stock Plug/Heat Range: JIS:6 | From 4/1989 Thru 1/1991 Production Date | |
| NISSAN | 300ZX | V6 | 3.0 | VG30T | 1984 - 1989 | HZ31/HGZ31 Chassis | Stock Plug/Heat Range: JIS:6 | From 9/1983 Thru 6/1989 Production Date | |
| NISSAN | PULSAR NX | ALL | 1.6 | CA16DE | 1987 - 1987 | EB12 Chassis | Stock Plug/Heat Range: JIS:6 | From 8/1986 Thru 1/1990 Production Date | |
| NISSAN | SKYLINE | ALL | 2.0 | RB20DE | 1989 - 1991 | HR32/HCR32/HNR32 Chassis | Stock Plug/Heat Range: JIS:5 | From 5/1989 Thru 8/1991 Production Date | |
| NISSAN | SKYLINE | ALL | 2.0 | RB20DET | 1989 - 1991 | HCR32/HNR32 Chassis | Stock Plug/Heat Range: JIS:5 | From 5/1989 Thru 8/1991 Production Date | |
| NISSAN | SKYLINE | ALL | 2.5 | RB25DE | 1991 - 1993 | ECR32/ER32 Chassis | Stock Plug/Heat Range: JIS:5 | From 8/1991 Thru 8/1993 Production Date | |
| NISSAN | SKYLINE | ALL | 2.6 | RB26DETT | 1989 - 1994 | BNR32 Chassis | Stock Plug/Heat Range: JIS:6 | From 8/1989 Thru 1/1995 Production Date | |
| NISSAN | SKYLINE | ALL | 2.6 | RB26DETT | 1995 - 1998 | BCNR33 Chassis | Stock Plug/Heat Range: JIS:6 | From 1/1995 Thru 1/1999 Production Date | |
| NISSAN | SKYLINE | ALL | 2.6 | RB26DETT | 1999 - 2002 | BNR34 Chassis | Stock Plug/Heat Range: JIS:6 | From 1/1999 Thru 8/2002 Production Date | |
| TOYOTA | CELICA | ALL | 2.0 | 3SFE | 1987 - 1989 | ST162 Chassis | Stock Plug/Heat Range: JIS:5 | From 8/1987 Thru 8/1989 Production Date | |
| TOYOTA | CELICA | ALL | 2.0 | 3SGELC | 1987 - 1989 | ST162 Chassis | Stock Plug/Heat Range: JIS:5 | From 8/1985 Thru 8/1989 Production Date | |
| TOYOTA | CELICA | ALL | 2.0 | 3SGTE | 1988 - 1989 | ST165 Chassis | Stock Plug/Heat Range: JIS:5 | From 10/1986 Thru 8/1989 Production Date | |
| TOYOTA | COROLLA | ALL | 1.6 | 4AFE | 1988 - 1992 | AE95 Chassis | Stock Plug/Heat Range: JIS:5 | From 5/1988 Thru 5/1992 Production Date | |
| TOYOTA | COROLLA | ALL | 1.6 | ALL | 1985 - 1987 | AE86 Chassis | Stock Plug/Heat Range: JIS:5 | From 6/1983 Thru 5/1987 Production Date | |
| TOYOTA |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.1 ★★★★★
Based on 18 reviews
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Product Reviews
★★★★★ 5
Shark dog approved
Size: Large, Color: Broccoli, Size: Large, Color: Broccoli
My new baby shark.... I mean puppy really enjoys chewing. I can't just give her a ton of pig ears or bully sticks all day, which she would definitely love, so I'm constantly looking for well made chew toys. I'd put this right up with Kong. Very durable and nice. I also love the different textures, she seems to also love it. She can gnaw at the top and chew on the stem. She wanted it as soon as I opened it - it does smell like bacon but I haven't taken a chomp at it to be able to write a complete review!
My dog is about 23 lbs but I can see a 80 lb dog chew this, it's not small.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 8, 2025
★★★★★ 4
So cute
Size: Large, Color: Pumpkin
My French Bulldogs have really strong jaws and are aggressive chewers. These really are sturdy and last a good amount of time. They are a bit heavy and awkward for my dogs to hold onto but they do like them.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 25, 2026
★★★★★ 5
Cute toy and super tough!
Size: Small, Color: Lobster
My small dog is a serious chewer, and this lobster toy has been holding up great. Usually, he destroys toys within a day, but this one’s still going strong after a couple of weeks. The shape is perfect — easy for him to grab and chew, and the little claws keep him entertained.
The filet mignon flavor must be good because he goes right for it every time. It’s sturdy without being too hard on his teeth, and it doesn’t leave any mess or pieces behind.
If you’ve got a small but mighty chewer, this one’s definitely worth it. Cute design, lasts forever, and keeps my pup busy — total win. 🦞🐾
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Reviewed in the United States on October 26, 2025
★★★★★ 5
Excellent toy
Size: X-Large, Color: Lobster
Very durable. Dog who has destroyed every toy ever purchased loves this and it is still in great condition.
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Reviewed in the United States on April 21, 2026
★★★★★ 3
Cheese the Day with Nylabone's Power Chew Cheese Chew Toy!
Size: X-Large, Color: Cheese
As a devoted dog parent, I've always believed that our furry friends deserve the best, especially when it comes to their favorite pastime—chewing! Nylabone's Power Chew Cheese Chew Toy is a game-changer that's added an extra layer of excitement to our dog's chewing routine.
**Chew-Tastic Design:**
First things first, the cheese-inspired shape of this chew toy is a hit in our household. Our dog can't resist its quirky design, and it's become a beloved addition to his chew toy collection. It's like a fun surprise every time he reaches for it!
**Flavor Pockets for Fun:**
What truly sets this chew toy apart is its flavor pockets. We fill them with spreadable treats, turning regular chew time into an epic adventure. Our dog absolutely loves the challenge of getting every last bit of treat, and it keeps him engaged for hours.
**Dental Health Bonus:**
Beyond the fun factor, the unique textures on this toy serve a dual purpose. Not only do they provide extra sensory enjoyment for our pup, but they also help clean his teeth as he chews. It's a win-win for both entertainment and dental health.
**Built to Last:**
Now, let's talk durability. Our dog is a power chewer, and this toy has proven to be up to the challenge. Made from Nylabone's most robust material, it's stood the test of time, promoting healthy chewing habits and saving our furniture from destruction.
**Satisfaction All Around:**
This chew toy isn't just for our dog's enjoyment; it brings joy to our family too. Seeing our furry friend so engaged and happy is priceless. It satisfies his natural urge to chew while teaching him healthy chewing habits.
**A Flavorful Experience:**
Did I mention the cheese flavor? It runs throughout the toy, adding another layer of enjoyment for our pup. It's like a delicious treat that never ends!
**Perfect for Big Dogs:**
As the proud parent of an extra-large dog, we opted for the "Souper" size, designed for dogs over 50 pounds. It's the perfect size for our gentle giant.
In conclusion, Nylabone's Power Chew Cheese Chew Toy has become an integral part of our dog's life. It's more than just a chew toy; it's an adventure, a dental health solution, and hours of entertainment all rolled into one. We've embraced the mantra of "Cheese the Day" with this fantastic chew toy, and we wholeheartedly recommend it to fellow dog parents looking to add more joy and flair to their furry friend's life!
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Reviewed in the United States on October 27, 2023
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